package thread.waitandnotify;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;

/**
 * @author liweimin
 * @date 2021/4/30 14:30
 * @since
 */
public class Test2 {
    public static void main(String[] args) {
        List<String> list = new ArrayList<>();
        Thread thread1 = new Thread(() -> {
            synchronized (list) {
                if (list.size() != 5) {
                    System.out.println("线程1开始等待======" + System.currentTimeMillis());

                    try {
                        list.wait();
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println("线程1被唤醒====" + System.currentTimeMillis());
                }
            }
        });

        Thread thread2 = new Thread(() -> {
            synchronized (list) {
                for (int i = 0; i < 10; i++) {
                    list.add("data-" + i);
                    System.out.println("线程2添加了第" + i + "个数据");
                    if (list.size() == 5) {
                        list.notify();//唤醒线程，不会立即释放锁对象，需要等到当前同步代码块都执行完毕后。释放锁对象
                        System.out.println("线程2已经发起唤醒操作");
                    }

                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        });

        thread1.start();

        try {
            TimeUnit.SECONDS.sleep(1);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        thread2.start();
    }
}
